Lactobacillus reuteri is a bacterium that lives naturally in the human digestive tract — one of the best-understood species in its family, not a new or unfamiliar one. A child’s gut is home to trillions of bacteria. L. reuteri helps maintain a balanced gut microbiome and supports comfortable digestion as part of a daily routine.†

Children ages 4 and older, and adults. One small vegetarian capsule. If your child is under 4, or you are unsure whether a probiotic is right for them, talk to your child’s healthcare professional first.

Yes. Open the capsule and stir the contents into a small amount of cool or room-temperature food or drink, then give it right away. Don’t add it to anything hot, and don’t mix it ahead of time.

Whenever it fits your morning — most families give it with breakfast. It’s meant to be taken daily, the way you’d take any daily supplement, rather than only when something feels off.

Each capsule contains 10 billion cells of a single strain of Lactobacillus reuteri at the time of manufacture. You can see exactly what’s in it and how much, on the Supplement Facts panel — no proprietary blend, nothing unnamed. A higher number on the front of a bottle describes quantity, not what the organisms are.

Other ingredients are guar fiber, vegetarian capsule (hypromellose, water), inulin (from chicory root), trehalose, magnesium stearate and silica. Made without dairy, artificial colors, artificial flavors, sweeteners, yeast, wheat, tree nuts, starch, casein, eggs or peanuts. The full list is on the Supplement Facts panel, and there is nothing in this product that isn’t on it.

It’s shelf-stable for transport, so it’s fine in the mail. Refrigerate it after it arrives to help protect the live cells.

Yes — talk to your child’s healthcare professional before use, especially if your child is taking medication, has a medical condition, or has a weakened immune system. As with any new supplement, start it on a day you can keep an eye on how your child does.